Injector for hydrocarbon-furnaces



(No Model.)

W. B. WRIGHT.

INJECTOR FOR HYDROGARBON FURNACES.

No. 371,157. Patented 0013.4,1887.

/ A all" l N. wrrsns. PhMcvLilhcgapher. whalin no UNITED STATES PATENT OFFICE.

\VALTER \VRIGHT, OF TROY, NEW YORK.

INJECTOR FOR HYDROCARBON-FURNACES.

SPECIFICATION forming part Application filed March 3, 1887. Serial No. 520.59%).

T 0 At whom it may concern:

Be it known that I, WALTER B. WRIGHT, of Chicago, in the county of Cook and State'of Illinois, have invented certain new and useful Improvements in Injectors for Hydrocarbon- Furnaces, of which the following is a specification.

My invention relates to injectors desi gncd for use in connection with hydrocarbon-furnaces; and it consists in various features and details, hereinafter fully set forth and claimed.

In the drawings, Figure 1 is a longitudinal central sectional view through 'myimproved injector; Fig. 2, a section on the line 00' no, and Fig. 3 a sectional view on the line 3 y.

A indicates the shell or case, which will advisedly be made in a single casting, the shell being provided with an elliptical end plate, B, by which it may be bolted to the end of the retort, and is also turned or bored to form a central cylindrical chamber, 0. The shell is further provided with steam and oil passages D and E, and with a discharge-nozzle, F, axially in line with the chamber 0, as shown in Fig. 1. The other end of chamber 0 is closed by means of a cap, G, which latter is in turn formed with a neck or extension, H, asshown in Fig. 1. At the base of the neck the cap is provided with (1, provided with a central opening to permit the valve-stem to pass therethrough, and made concave on its outer face. Fitting within the neck and upon the valve-stem is a block, I), made concave on its inner face, and provided with a lateral flange, c, to rest upon the upper edge of the neck, the block being held in place by a cap,d,screwing onto the neck. The outer end of the shell or casing proper is enlarged in diameter, as shown in Fig. 1, to form a chamber, I, the front and rear walls of said chamber being formed, respectively, by the in-' ner end of cap G and the offset h in the shell or case. At the upper side this chamber communicates with a second chamber, J, semicircular in cross'section and extending at right angles to the axis of the case A, as shown in Figs. 1 and 2. This chamber is closed at its outer end by means of a cap,G,having a flange, a, and a neck or extension, H, and a block, b,

an inwardly-projecting flange,

of Letters Patent No. 371,157. dated October 4,1887.

(No model.)

and cap 11, substantially the same in construction as the devices applied to the end of theshell or case and hereinbefore referred to. It is of course to be understood that the space between the flange a and theblock b will be filled with a suitable packing to insure a tightjoint and prevent the escape of steam. Where the steam-passage communicates with the chamberC the latter is formed with an annular enlargement, e, as shown in Fig. 1, in order that the steammay pass upon and enter from all sides of the hollow valve, hereinafter described.

Having now set-forth the general construction of the shell or casing, I will describe the construction of the valves and their operating mechanism.

Fitting snugly within the main chamber G is a valve, K, which, as shown in all the figures, is hollow from end to end. At its forward or inner end it is reduced in diameter and beveled or tapered to flt accurately within the discharge-nozzle, and. where it works in the annular enlargement e of chamber 0 it is pro videdwith a number, advisably six, of lateral openings f, through which steam may pass into the interior of the valve.

A spline or feather, g, is set into the outer lower face of valve K, as shown in Figs. land 3, which works in aslot or groove in the inner face of the shellA, thereby preventing said valve K from turning or rotating, but allowing it to slide back and forth longitudinally. The outer end of the valve K is threaded externally, as shown in Fig. 1, and upon this threaded portion is an internally-threaded worm-nut, L. (Shownin Figs. land 2.) This worm-nut is of the exact width of the chamber I, and fits between the flange or offset it, formed in the walls of the shell A and the in ner end of the cap G. Of course as the wormnut is prevented from moving laterally any rotation thereof will cause the valve K to reciprocate or slide back and forth within the shell or case, according to the direction of rotation of the worm-nut.

In order to give the desired rotation to the worm-nut, I providea worm, M. (Shown in Figs. 1 and 2.) This worm is journaled at its inner end in the rear wall of chamber J, and is provided with a stem, N, and a hand-whee], O, the stem passing outward through the cap G, secured onto the outer end of chamber J. From this construction it will be seen that by turning the worm M in one or the other direction the worm-nut will also be caused to rotate, and the valve K adjusted longitudinally to regulate with the utmost nicety the amount of oil discharged.

The valve K is threaded, 1, to receive a threaded hub or enlargement, P, of the valve-stem Q, one end of said stem projecting out through the cap G, secured to the end of the shell, and provided with ahandwheel, R, while the inner end is provided with a beveled head, i, to fit the valve-seat in the interior of the hollow valve.

Upon reference to Fig. 1 it will be seen that the valve-seat formed within the hollow valve is of about the same size as the valveseat formed in the discharge-nozzle, and it will also he observed that by reducing thediameter of the nose of the hollow valve I am enabled to obtain a larger opening with less movement of said valve than is possible while the larger valves have been employed. In other words, where the area of the opening is the same in both the smaller valve permits an opening of such form to be made as will not readily clog up.

It is obvious that instead of using the spline or feather to prevent rotation of the hollow valve K, the latter and the chamber 0, in which it slides, may, if desired, be made angular in cross section throughout a portion of their length, and it is likewise apparent that the arrangement of thesliding valve and wormnut and worm may be varied and adapted to valves of other forms and styles without departing from the spirit of my invention.

I do not claim herein anything shown or described in my application No. 222,657, filed December 27, 1886.

as shown in Fig.

In an application filed by me, Serial No.

- K, threaded internall 239,478, I have shown, described, and claimed the worm-wheel and worm for operating a hollow valve; and I hereby reserve to myself the right to claim in said application all features which are not herein specifically claimed.

Having thus described my invention, what I claim is 1. In combination with shell A, provided with an offset, as h, and with a cap, G, a valve, as K, mounted and free to slide in the shell and provided with an external screw-thread, aworm-nutencircliug the valveKand clamped between the cap-plate and the offset, and a Worm, M, meshing with the worm-nut, substantially as shown and described.

2. In combination with shell A,11o1low valve y and externally, a stem,

screwing into the valve K, a worm-nut encircling the valve, a worm meshing with the worm-nut, and a guidingrib or feather, 9, all substantially as shown.

3. In combination with shell A, provided with a central chamber and with steam and oil inlets, a discharge-nozzle, a hollow valve provided with lateral openings, a conical nose, internal and external screw-threads, and an internal valve-seat, a stem, Q, screwing into the hollow valve, a worm-nut encircling the latter, and a worm meshing with the wormnut.

4. In combination with shell I A, ha ving the centralchamber,

O, enlarged chamber I, and the transverse chamber J, a hollow valve, K, free to slide back and forth in chamber 0, a worm-nut mounted in chamber I and encircling the valve, and a stem, N, having worm M, mounted in chamber the wornrnut.

In witness whereof I hereunto set my hand in the presence of two witnesses.

WALTER B. WRIGHT. \Vitnc-sses:

WM. SHAW,

H. D. BAILEY.

J and meshing with 

